Additional Heating System Accessories - Webasto Thermo 90 ST B Installation Manual

Thermo 90 ST
11
2
9
4
3
Figure 15: System configured with an additional auxiliary heat exchanger connected in "series / parallel" with rear heat
exchanger circuit. (Recommended for Kenworth AeroCab & Studio Sleeper built before July 1994, Ford
Aeromax, and Navistar CEO & Conventional Cab.)

7.3 Additional Heating System Accessories

Webasto offers a line of Sleeper Pack Interface Wiring Kits that work with many OEM HVAC systems. These kits
simplify the installation and pairing of the Webasto coolant heater with the vehicle's own bunk heating system.
The Sleeper pack interface takes control of the bunk heater during coolant heater operation. With the coolant heater
off, the bunk heater system control is returned to the vehicle's control panel.
Consult to your Webasto Sales Representative for Sleeper Pack availability by vehicle make, model and year.
www.webasto.us
2
8
1
9
Connection to the Vehicle Cooling System
7
6
5
15
1. Coolant supply connection
2. Vehicle heat exchangers
3. Coolant pump
4. Thermo 90 ST heater
5. Coolant return connection
6. Engine coolant pump
7. Thermostat
8. Automated control valve
9. Wye connectors
10. N/A
11. Auxiliary heat exchanger
Webasto Product N.A., Inc.